package com.yst.gateway.monitor.common.exceptions;

import org.apache.log4j.Logger;
import org.springframework.http.HttpStatus;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.web.HttpMediaTypeNotSupportedException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

import com.yst.gateway.monitor.common.beans.Response;

/**
 * 全局异常处理类
 * @author sheungxin
 *
 */
@ControllerAdvice
@ResponseBody
public class ExceptionAdvice {
	private static Logger logger=Logger.getLogger(ExceptionAdvice.class);
	
	/**
	* 400 - Bad Request
	*/
	@ResponseStatus(HttpStatus.BAD_REQUEST)
	@ExceptionHandler(HttpMessageNotReadableException.class)
	public Response handleHttpMessageNotReadableException(HttpMessageNotReadableException e) {
		logger.error("参数解析失败", e);
		return new Response().failure("could_not_read_json");
	}
	
	/**
	* 400 - Bad Request
	*/
	@ResponseStatus(HttpStatus.BAD_REQUEST)
	@ExceptionHandler(MethodArgumentNotValidException.class)
	public Response handleValidationException(MethodArgumentNotValidException e) {
		logger.error("参数验证失败", e);
		return new Response().failure("validation_exception");
	}
	
	/**
	* 405 - Method Not Allowed
	*/
	@ResponseStatus(HttpStatus.METHOD_NOT_ALLOWED)
	@ExceptionHandler(HttpRequestMethodNotSupportedException.class)
	public Response handleHttpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e) {
		logger.error("不支持当前请求方法", e);
		return new Response().failure("request_method_not_supported");
	}
	
	/**
	* 415 - Unsupported Media Type
	*/
	@ResponseStatus(HttpStatus.UNSUPPORTED_MEDIA_TYPE)
	@ExceptionHandler(HttpMediaTypeNotSupportedException.class)
	public Response handleHttpMediaTypeNotSupportedException(HttpMediaTypeNotSupportedException e) {
		logger.error("不支持当前媒体类型", e);
		return new Response().failure("content_type_not_supported");
	}
	
	/**
	* 500 - Internal Server Error
	*/
	@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
	@ExceptionHandler(Exception.class)
	public Response ehandleException(Exception e) {
		logger.error("服务运行异常", e);
		return new Response().failure(e.getMessage());
	}
}
